Brick-machine mold



Sept. 16 1924.

J. P. MARTIN BRICK MACHINE MOLD Filed Feb. 28 1924 @fdz Fatented Sept.is, 1924.

UNlTED res PATENT FFICE.

WORKS, INC., 0F LANCASTER, VAN'IA.

PENNSYLVANIA, A CORPORATION OF PENNSYL- BRICK-MACHINE MOLD.

Application filed February 28, 1924. Serial No. 695,682.

To all whom it may concern:

Be it known that I, JAMES P. MARTIN, a citizen of the United States,residing at Lancaster, in the county ofLancaster and State ofPennsylvania, have invented a new and useful Improvement inBrick-lvlachine Molds, of which the following is a specification.

The present invention is an improvement .upon the brick machine molddescribed and claimed in Letters Patent of the United States No.1,314,057 of August 26, 1919, H. 7. B. Graham, deceased, and itsprincipal objects are first, t-o eliminatethe carrying back of clay orsand or other foreign substances into the sander; and second, to insureuniform and uninterrupted travel of the mold on the gravity wheel of themachine.

Other objects of the invention will appear from the followingdescription, and the invention, stated in general terms, may be said tocomprise a brick machine mold having at each end. a bumping blockfacially provided. with a shoe extending uninterruptedly from one sideof the mold to the other and consisting of aunitary metal plate.

The invention also comprises the improvements to be presently describedand finally claimed.

In the following description reference will he made to the accompanyingdrawings forming part hereof and in which there is illustrated oneembodiment of the invention selected from other embodiments and in thedrawings Figure 1 is a top or plan view of a brick machine moldembodying features of the invention.

Fig. 2 is a side elevational view of the same.

Fig. 3 is a sectional view takenon the line 3-3 of Figure 1. H

Fig. 4 is a sectional view taken on the line H of Figure 1, and

Fig. 5 is an end view.

Referring to the drawings 1 are the side pieces. and 2 are the endpieces of the mold,

and the mold is provided at its end with projecting members 3. 4 aremetal plates co-extensive as unitary structures not only with the topsurface of the members or bumping blocks 3, but also with the top edgesof the adjacent end pieces 2. These plates 4 constitute shoes thatextend uninterruptedly from one side of the mold to the other.

One of'the advantages of the described construction is thatit preventsclay or sand or other foreign substance from being con veyed back intothe mold sander by the molds, and this it does because of the continuity of the shoes 4, which present no cracks or cavities such as, iffilled with clay or other foreign substance, would, when the mold gotback in the mold sander and met the hot dry sand, permit it to dry outand fall off into the mold sander and dirty the sand. The describedshoes or plates 4 extending from side to side of the mold at the endsthereof do not interfere with the action of the mold on the gravitywheels of the brick machine with which it is especially adapted for useand which is known in the trade as the Auto-Erik Machine. EXpansion andcontraction of the wood or lumber of the bumping blocks and molds, suchas occur through soaking in water and then dryingouudo not disturb orsubstantially disturb the surface of the shoes 4, thus no obstruction ispresented to the gravity wheels and uniform and uninterrupted travel ofthe mold on the gravity wheels is insured. The brick machine and theparts or features of it to which reference has been made are too-wellunderstood to require illustration or description.

I claim:

1. A brick machine mold having side and end pieces and having at itsends projecting bumping members and provided at the ends with solidmetal plates co-eXtensive as unitary structures not only with the topsurfaces of the members but also with the top edge of the adjacent endpiece.

2. A brick machine mold having at each 1 end a bumping block faciallyprovided with a shoe extending uninterruptedly from one side ofthe moldto the other and consisting of a unitary metal. plate, substantially asdescribed.

JAs, P. MAR-TIN.

